Sudden Problems, severely slow PC

Hi there. So a couple days ago now, I was playing Deus Ex Human Revolution on my PC. Running great. Suddenly, everything started to freeze and run slow. My NIC stopped responding, my open programs refused to close (even through task manager) and everything had gone wonky. I told it to shut down and it went to the windows 7 (ultimate, x64) shutdown screen and never shut down. I wound up hitting my reset button. The beep from bios boot sounds a tab bit longer now (but the mobo uses post codes on a small physical read-out, not beeps). Everything posted fine and windows loaded, no problems... When I logged in, my desktop had been completely replaced by a devoid black space with a mouse cursor so I could play about in the void. I reset again ( 3 times! ) and got the same issue. Finally I booted up in safe mode and everything was working. I ran a virus scan and it came up with a couple of minor items and I cleaned them out. I rebooted my pc.. and it failed to POST. WELL... That escalated quickly, now, didn't it? I read the POST code and it indicated that it stopped whilst testing my USBs. I unplugged my USBs and reset again. This time, it made it to the POST but it did so VERY slowly and it was doing the strangest symptom yet. It was (and still is) loading the screen top to bottom, line by line (graphically, not text/code - wise). I have since replaced the HDD entirely and installed the OS fresh. I'm still having the same problem. RAM is... All frame rates have dropped in every game considerably, even pre-rendered videos lag! I've tested the problems with two separate GPUS and the problems are the same with both.

Any ideas? I'm planning on replacing the CPU and MOBO at this point but want to see if anyone has any suggestions before I do so!
4 answers Last reply
More about sudden problems severely slow
  1. Sorry- RAM checked out. Also; the OS will never boot on the first try after a shut down. Must lock up at the start up of the OS and then restart and then it'll load the OS. (that's what made me get a new HDD, even ran chkdsk on it though and it came up clean.)
  2. Reset/clear the bios. it sounds like it booting up in 800mhz mode. You could probably run cpuz and verify that.
  3. I had to reset the BIOS to get it to show the usb post error code the first time around. Everything is default in BIOS. I've downloaded CPUz, which field do you want the readout from? I've honestly never heard of "800mhz mode"

    Thank you for your response!
  4. A quick DXDIAG overview so you have an idea of what you're working with...

    System Information
    Time of this report: 9/19/2012, 23:53:13
    Machine name: VSK-PC
    Operating System: Windows 7 Ultimate 64-bit (6.1, Build 7600) (7600.win7_gdr.120503-2030)
    Language: English (Regional Setting: English)
    System Manufacturer: OEM
    System Model: OEM
    BIOS: Phoenix - AwardBIOS v6.00PG
    Processor: Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz (8 CPUs), ~2.7GHz
    Memory: 10240MB RAM
    Available OS Memory: 8184MB RAM
    Page File: 2536MB used, 13828MB available
    Windows Dir: C:\Windows
    DirectX Version: DirectX 11
    DX Setup Parameters: Not found
    User DPI Setting: Using System DPI
    System DPI Setting: 96 DPI (100 percent)
    DWM DPI Scaling: Disabled
    DxDiag Version: 6.01.7600.16385 32bit Unicode

    DxDiag Notes
    Display Tab 1: No problems found.
    Sound Tab 1: No problems found.
    Sound Tab 2: No problems found.
    Sound Tab 3: No problems found.
    Input Tab: No problems found.

    DirectX Debug Levels
    Direct3D: 0/4 (retail)
    DirectDraw: 0/4 (retail)
    DirectInput: 0/5 (retail)
    DirectMusic: 0/5 (retail)
    DirectPlay: 0/9 (retail)
    DirectSound: 0/5 (retail)
    DirectShow: 0/6 (retail)

    Display Devices
    Card name: NVIDIA GeForce GTX 470
    Manufacturer: NVIDIA
    Chip type: GeForce GTX 470
    DAC type: Integrated RAMDAC
    Device Key: Enum\PCI\VEN_10DE&DEV_06CD&SUBSYS_00000000&REV_A3
    Display Memory: 4049 MB
    Dedicated Memory: 1233 MB
    Shared Memory: 2816 MB
    Current Mode: 1920 x 1200 (32 bit) (59Hz)
    Monitor Name: Generic PnP Monitor
    Monitor Model: HT-R390
    Monitor Id: ONK0B33
    Native Mode: 1920 x 1200(p) (59.950Hz)
    Output Type: HDMI
    Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
    Driver File Version: 9.18.0013.0623 (English)
    Driver Version:
    DDI Version: 10.1
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