Sign in with
Sign up | Sign in
Your question

Computer randomly restarts

Tags:
Last response: in Toms Network
Share
September 2, 2012 10:59:00 PM

Hi,

Forgive me, I'm new to this forum, so I'm not exactly sure where to put this thread, but...

Lately I've been having an issue with my computer randomly restarting...It happens right after I start the computer up, I'll get on the internet to check email or just leave it on the sign in screen for awhile, and it will shut down and restart, after this it usually doesn't happen again for the rest of the computer use, only the first time of the day. After a "cold start" so to speak.

Basic specs:
-Dell XPS 9000/435t
-Intel Core i7 975 @ 3.33Ghz (stock - never overclocked)
-nvidia GeForce GTS 240 (also stock)
-12GB RAM
-Windows 7 Ultimate x64
-PSU is stock...475W, I believe.

Everything is stock except:

What I've done:
-Added Corsair force GT SSD (contains OS and main/ most used programs)
-Added 1TB WD caviar Black HDD (contains everything else)
-just replaced the CMOS battery.

What needs to be done:
-Possibly replace RAM at some point...I'll get a BSOD once a month or so, but mdsched.exe claims no problems...probably lying...Can't remember what the error says. UPDATE: I ran memtest86, it reported no errors.



It just started happening this summer (I do live in a notoriously hot area, and the room the computer is in is usually around 80 degrees normally (over 100 outside). This problem just started happening a couple months or so ago, so I have no idea how it will react to the colder house temperatures of winter. I have no idea if this is contributing to the problem or not...

All drivers *should* be up to date...I recently had a problem with the computer randomly freezing right after startup (about in the same place as the crash (while checking email, or at the login screen)) but then after resetting, it was usually good for the rest of the day/ night...I updated the motherboard drivers from Intel, and the freezing stopped, but the restarting started. It's been awhile since I did this, so I can't remember if it would freeze more than once, or if the restarting happened after (in other words, I'm not sure if there's a direct relation between the freezing and restarting... or updating the motherboard drivers...)

Anyways...I fear it may be an overheating or a PSU problem...I've added a report from hardware monitor below...This is about 30 minutes after the restart, so it's been running normally for about 20 minutes or so. I hope someone can make something of those results...I have no 'normal' to compare them too, so I don't know if voltage is too high or low, or likewise if temperature is too high or low...

A bit more information on the restarts:

They're not "normal" restarts...It literally just shuts down, then starts back up of it's own accord. It's almost as if I pulled the power cable, then put it back in and the computer started itself back up. No BSOD, or error screen. After the computer "restarts" the first time, it doesn't do it again until I "cold start" the computer again later.

I tried the Windows 7 forum with absolutely no luck, just ended up getting no replies to my thread after a couple dead ends...So i've just let the thread die, since I'm convinced that this is a hardware issue...which brings me here.

So, any help is much appreciated!!

Thanks in advance!!


HARDWARE MONITOR RESULTS:



CPUID HWMonitor Report
-------------------------------------------------------------------------

Binaries
-------------------------------------------------------------------------

HWMonitor version 1.2.0.0

Monitoring
-------------------------------------------------------------------------

Mainboard Model 0X501H (0x00000166 - 0x0054AB00)

LPCIO
-------------------------------------------------------------------------

LPCIO Vendor Fintek
LPCIO Model F71882F
LPCIO Vendor ID 0x1934
LPCIO Chip ID 0x541
Config Mode I/O address 0x4E
Config Mode LDN 0x4
Config Mode registers
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 FF FF 00 FF FF FF FF 04 FF FF FF FF FF FF FF FF
10 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
20 05 41 20 19 34 00 00 30 40 00 00 60 08 08 00 00
30 01 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
40 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
50 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
60 0A 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF
70 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
Register space LPC, base address = 0x0A00


Hardware Monitors
-------------------------------------------------------------------------

Hardware monitor Fintek F71882F
Voltage 0 3.34 Volts [0xD1] (+3.3V)
Voltage 1 0.93 Volts [0x74] (CPU VCORE)
Voltage 2 1.49 Volts [0x5D] (VIN2)
Voltage 3 0.83 Volts [0x47] (VIN3)
Voltage 4 5.09 Volts [0x79] (+5V)
Voltage 5 12.06 Volts [0x89] (+12V)
Voltage 6 1.74 Volts [0x6D] (VIN6)
Voltage 7 3.34 Volts [0xD1] (VSB3V)
Voltage 8 3.28 Volts [0xCD] (VBAT)
Temperature 0 46°C (114°F) [0x2E] (TMPIN0)
Temperature 1 69°C (156°F) [0x45] (TMPIN1)
Temperature 2 53°C (127°F) [0x35] (TMPIN2)
Fan 0 1129 RPM [0x531] (FANIN0)
Fan 1 971 RPM [0x609] (FANIN1)
Fan 2 795 RPM [0x75F] (FANIN2)
Fan PWM 0 100 pc [0xFF] (CPU)
Fan PWM 1 100 pc [0xFF] (System Fan 1)
Fan PWM 2 100 pc [0xFF] (System Fan 2)
Fan PWM 3 100 pc [0xFF] (System Fan 3)
Register space LPC, base address = 0x0A00

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 FF 03 00 00 FF FF FF FF FF FF 21 00 55 4C 00 00
10 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF
20 D1 9D 5D 46 79 8A 6E D1 CD FF FF FF FF FF FF FF
30 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
40 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
50 FF FF FF FF FF FF FF FF FF FF 03 04 10 19 34 FF
60 00 00 00 00 FF FF 00 00 00 00 FF 08 40 24 FF 00
70 FF FF 2E FF 45 FF 35 FF FF FF FF FF FF FF FF FF
80 FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 FF
90 00 08 08 00 56 FF 00 FF 00 24 FF 00 55 55 FF 1A
A0 05 31 05 34 01 4D 53 53 43 31 00 00 00 16 60 1D
B0 05 F9 05 FA 02 64 53 53 43 31 00 00 00 15 30 1D
C0 07 5D 07 50 02 A9 53 53 43 31 00 00 00 1A 38 1D
D0 0F FF 0F FF 03 FF 3C 32 28 1E FF D9 B2 99 80 0F
E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
F0 00 00 00 00 00 00 3D FF 00 00 FF 00 FF FF FF FF

Hardware monitor NVIDIA NVAPI
Voltage 0 1.12 Volts [0x460] (VIN0)
Temperature 0 76°C (168°F) [0x4C] (TMPIN0)
Fan PWM 0 71 pc [0x47] (FANPWMIN0)


Processors
-------------------------------------------------------------------------

Number of processors 1
Number of threads 8

APICs
-------------------------------------------------------------------------

Processor 0
-- Core 0
-- Thread 0 0
-- Thread 1 1
-- Core 1
-- Thread 0 2
-- Thread 1 3
-- Core 2
-- Thread 0 4
-- Thread 1 5
-- Core 3
-- Thread 0 6
-- Thread 1 7

Timers
-------------------------------------------------------------------------

ACPI timer 3.580 MHz
HPET timer 14.318 MHz
Perf timer 3.247 MHz
Sys timer 1.000 KHz


Processors Information
-------------------------------------------------------------------------

Processor 1 ID = 0
Number of cores 4 (max 8)
Number of threads 8 (max 16)
Name Intel Core i7 Extreme 975
Codename Bloomfield
Specification Intel(R) Core(TM) i7 CPU 975 @ 3.33GHz
Package (platform ID) Socket 1366 LGA (0x1)
CPUID 6.A.5
Extended CPUID 6.1A
Core Stepping D0
Technology 45 nm
Core Speed 1862.0 MHz
Multiplier x FSB 14.0 x 133.0 MHz
Rated Bus speed 3192.0 MHz
Stock frequency 3333 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x
L1 Data cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 4 x 32 KBytes, 4-way set associative, 64-byte line size
L2 cache 4 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache 8 MBytes, 16-way set associative, 64-byte line size
FID/VID Control yes


Turbo Mode supported, enabled
Max turbo frequency 3600 MHz
Max non-turbo ratio 25x
Max turbo ratio 27x
Max efficiency ratio 12x
Max bus number 255
Attached device PCI device at bus 255, device 2, function 0
Attached device PCI device at bus 255, device 3, function 4




----------------------------


********* I can post the thread dumps as well if anyone needs that, but It's kind of a lot to put in this post...
September 5, 2012 9:41:16 PM

Hi Chris, I'm having the same problem with the same model... Dell Studio 9000 435.. I formatted and re-installed Windows and about 45 minutes later a restart came up. No dump files were created. My computer is still under warranty and I contacted Dell. They haven't figured out what could it be. I used an app that simulates stress conditions to the pc and it came up with a Video Card High Temp error. It reaches 106 Celsius. I just emailed Dell again with those results and now I'm waiting for their reply.
September 6, 2012 12:11:38 AM

elliot315 said:
Hi Chris, I'm having the same problem with the same model... Dell Studio 9000 435.. I formatted and re-installed Windows and about 45 minutes later a restart came up. No dump files were created. My computer is still under warranty and I contacted Dell. They haven't figured out what could it be. I used an app that simulates stress conditions to the pc and it came up with a Video Card High Temp error. It reaches 106 Celsius. I just emailed Dell again with those results and now I'm waiting for their reply.



It's nice to know that I'm not the only one with this problem. I think you're on to something with the temperatures, because my computer definitely doesn't do this in the winter when the room is really cold. I did some research and found relatively mixed results about core temps...My GPU is usually operating around 75 to 76 degrees after the restart, which some people say is high, and some people say is low; low if gaming, and high if idle. Unfortunately, 76 degrees is my idle temperature...I do however hear that 106 is quite high, even for gaming, though I have no doubt that mine would reach those temperatures as well, since it's under minimal stress most of the time at idling at 76 degrees.

I've actually been meaning to upgrade my graphics card, but I updated the drivers, and I'm going to clean the current one and see If i see any improvement. I'll be interested to hear what Dell has to say about the problem. Thanks for the info!
Related resources
September 15, 2012 12:46:37 AM

Update:

I seem to have solved the problem....Or rather, the problem hasn't really occurred in several days (which was unheard of, since It was happening daily before). First I updated BIOS, which hadn't been done, I still had A13...Updated to A16 (I don't think this was the problem, but it just needed to be done). Next I updated my graphics driver ---NOT from the Nvidia site this time--- but rather from the device manager, and through Windows. However, Now my graphics card doesn't show up on the CPUID hardware monitor, so I have no idea what temp it's running at. I also updated some random drivers from Dell's website that were recommended for my machine.

I still get some occasional random freezing (like once a week)...But no BSODs or random restarts to report!!
October 25, 2012 4:22:35 AM

Update 2:

Problem solved. Memtest finally reported some errors before freezing. DIMM slots were cleaned, RAM was reseated and rearranged. Day 3 - (3 cold starts later): no problems to report; no freezing, no BSODs, no random restarts.
!