pc restarting continuously even i am not getting time to see the bios screen

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Pramay Bhatpahri

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Feb 9, 2014
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last night i kept my pc on till morning, when i woke up i saw that my pc is restarting continuously, first i switched off the computer from main supply than again i switched on, it started for few minutes and again booting loop started, second i changed smps but it also didn't worked,
my computer is restarting again and again even i am not a getting a single second to see the motherboard welcome screen
my motherboard is p5g41t-mlx
please......... help
 
Solution
juanjostorreshernndez
We need your full specs to get a better idea of the situation.

however, there are a lot of things to consider when it hapends:

-Check all hardware connections inside your case.
-Make a clear CMOS in order to reset the bios settings.
-Check your PSU
-Check your mobo (bad caps tend to do that kind of issues).
-Check your HDD.
-And the list goes on and on
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juanjostorreshernndez

juanjostorreshernndez

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Sep 15, 2012
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We need your full specs to get a better idea of the situation.

however, there are a lot of things to consider when it hapends:

-Check all hardware connections inside your case.
-Make a clear CMOS in order to reset the bios settings.
-Check your PSU
-Check your mobo (bad caps tend to do that kind of issues).
-Check your HDD.
-And the list goes on and on
 
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Pramay Bhatpahri

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Thanx a lot, i had already tried the hardware connections, changed psu thrice, checked capacitor, changed hard disk twice..................
but i didn't cleared my CMOS, NOW I DID IT WELL MY COMPUTER STARTED FOR AROUND 5 MINUTES , NOW AGAIN THE SAME PROBLEM OCCURED ..... ANY IDEA....... ???????????
I DON'T KNOW WHAT HAPPENED TO THE PC SUDDENLY, I JUST LEFT IT ON WHOLE NIGHT FOR DOWNLOADING A GAME IN BITCOMET AND IN MORNING I SAW THAT IT WAS RESTARTING AGAIN AND AGAIN WITHOUT SHOWING THE POST BIOS , THEN I PLUGGED OFF THE POWER SUPPLY AND TRIED TO ON IT WELL ITS WAS OK FOR APPROX 3 MINUTES THAN AGAIN IT RESTARTED
1. THEN I CHECKED WIRE CONNECTIONS
2. I CLEAR THE DUST , CHANGED THE RAM , EXCHANGED THE SLOTS, EVEN TRIED WITH SINGLE RAM EACH
3. THAN I CHANGED SMPS
4. THAN I THOUGHT IT WOULD HAVE DUE TO HDD, I CHANGED IT ALSO
5. THAN I CHECK CAPACITORS ALL LOOKED GREAT
FINALLY
6. I DID THE CLEAR CMOS, IT WAS ON TILL APPROX 5 MINUTES THAN AGAIN SAME PROBLEM PERSISTS
ANY MORE SOLUTIONS.....
 
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juanjostorreshernndez

juanjostorreshernndez

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I NEED YOUR FULL SPECS
I am particulary interested in your PSU brand and model. And if you have any GPU.
Did you see the bios in those 5 min ?, maybe you can see the PSU voltages at bios settings before it turns off.
Also disconnect all unnecesary hardware from mobo( HDDs and cables, just the power swich from case).
 
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Pramay Bhatpahri

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Feb 9, 2014
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motherboard- p5g41t-mlx
processor- core 2 duo 2.93ghz
graphic card- asus nvidia geforce gt640
ram - 4GB
PSU- 400 watts iball
When i cleared the cmos by pin method, and plugged the power supply it automatically started without help of power button , and the problem still continues that is booting again and again this time without post bios message
 
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Pramay Bhatpahri

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its been a year i am using that GPU and i have never encountered this problem before and that time i was using windows 7 ultimate, i recently installed windows 8 enterprise and all worked fine untill last night when i left my pc on for almost 12 hours i encountered this problem
.............. ok i will change my PSU but how many watts do i require ???????????
 
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Pramay Bhatpahri

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i removed the HDD and it started again all by itself without the help of power button
and i have message on screen select proper boot device kinoff and again it turned off automatically and keep going on restarting again and again
 
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juanjostorreshernndez

juanjostorreshernndez

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that should not happen, it must not start by itself without the help of power button, that seems to be a mobo issue, if not PSU as well.
if the PSU voltage regulation is not working well, and Noise and Ripple levels are too high, then you can get mobo and other hardware damaged at near or long term, thats tipical when using generic PSUs, they are time bombs.
 
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juanjostorreshernndez

juanjostorreshernndez

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I need you to see the voltage values at bios,
for instance +12v tolerance is from 11,40~12,60 been 5% up and down, from the nominal value. If its beyond that, it means that the PSU voltage regulation is not working properly, with its consecuential issues.

 
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Scorps182

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I Know the solution has been picked but I just had the same problem and I just found the solution so I thought of leaving my solution If the selected doesn't help.

So my problem was that the PC was shutting down and restarting for a split second over and over again. So I disconnected the Power button pin on the motherboard and used my screwdriver to touch the 2 pins that powers the system. So it must have been a short circuit or something. I know it's not the most practical solution but it was the only way to make the system work until I have my Motherboard checked and replaced.

Hope it helps. :)
 
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TerrorUniverso

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Same here, and i used that method with srewdriver to touch the 2 pin !,
i try this and worked:
Remove power from the rig by disconnecting the power cord from the wall outlet.
Make sure the PC Speaker is plugged in.
Remove the Battery.
Move the CMOS jumper to CLEAR.
Press the Start Button on the case or motherboard to drain the capacitors.
You may leave the board in this condition for as long as it takes to clear the CMOS. If a short 30 second clear or a 15 minute clear doesn't work, try an 8 hour clear then a 24 hour clear.
Plug in a PS2 Keyboard.
Put one stick of RAM in the slot closest to the cpu.
Replace the Battery.
Move the CMOS jumper to Normal.
Press and hold the Insert Key on the Keyboard.
Apply power to the rig by plugging the power cord into the wall outlet.
Press the Start Button to power the rig up while holding down the insert key.
When you hear the BEEP, release the Insert Key and press the Delete Key on the Keyboard.
Once you enter the BIOS set the DATE and TIME then Load Optimized Defaults.
Save and Exit.
Enter the BIOS again and set it up the way you want for your particular rig.


If that doesn't take care of it, you'll probably need to RMA it.
 
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