Resolved pc restarts 1 sec after powering up

hi,my pc restarts just after pressing the power button,then it waits about 2 sec and power up itself and do the same story agian,I tried to remove the battery and put it again and tried unplugging the power button.thanks fot helping

 

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runner

 

it's desktop computer(intel core 2 quad had it for over a year) and it did something like that sometime ago but it was a heat problem so after I reinstalled the heatsink and changed the liquid between it and the process the pc worked okay,this recent problem happened while I was browsing the internet but the computer was on for about 2 days so I left it for about 12 hours than changed the liquid on the heatsink (sorry don't know it's real name) the problem is I can't even get any visual the computer reboots in 1 sec before opening anything so I can't get to the BIOS,thnx for helping man

 

yes I unplugged the keyboard, mouse. speakers , dvdrom , hard ,fans and still it goes up for 1 sec and then keeps rebooting and all plugged ,could it be the processor?

 

Sounds to me like your CPU is shutting down unit. This is usually a symptom of CPU overheating. Have you removed your heatsink lately?
Is there excessive dust around your heatsink?
Try removing heatsink and them applying new thermal grease
I doubt any external or internal devices are causing this problem.
Sounds like class case of overheated CPU. Seen a lot when doing builds.

 

Sounds like a classic case of overheating CPU. I have seen it numerous times.
Suggestions:
1. Clean out the heat sink from dust. & clean out airflow in the case while you are at it. No dust bunnies!
2. If this does not fix, likely problem with thermal grease on CPU not working right. Did you recently remove the CPU heat sink? If not, try removing & apply a fresh coat of thermal grease. Not, use some denatured alcohol to remove old thermal grease before applying new. More is not better. A pea size drop of new thermal grease does the job.
I doubt any internal or external devises are causing this problem. The failure is too quick to have them even recognized by system.

 

I was having a problem like this with a computer I was fixing. What I did was took out all PCI cards, RAM and anything the system didn't really need. Then I only put back essential things. Also mae sure that all the fans are spinning around nicely!

 

I am sorry guys for replying this late I had an exam today,thnx dale456654 and bruhowes it's likely a heat problem cause it's to hot in my country this days but i worry about my processor , I think it might be burned cause the pc doesn't open for more than 1 sec could it be? , I will clean up the cpu and put new thermal grease but what thermal grease should I use,any one or hp's does it differ? thnx for helping

 

If you spend a little more on it then it will probably be a little better. I get all of mine off eBay.

 

thnx I will do this today ,but is there a big chance the cause is a burned processor ?

 

When you plug in the computer and turn it on do you see anything on the screen at all?

If not then it could be.

Thermal paste is only cheap and doesn't take much time so it's worth trying.

 

well I changed the thermal grease and tried again it's the same , should i take it to a pro?

 

Michael, unless you are overclocking, pretty much all thermal grease is adequate. Overclockers have expensive special high heat transfer grease they use.
Maybe your CPU isn't tightly enough attached to heatsink. Try this:
Before you take out for help, try VERY CAREFULLY removing the CPU and make sure some grease has not become embedded into any of the tiny pin slots (have good magnifier). If you have grease in pin slots, might be hopeless to repair. My eyes are not that good to remove. Maybe yours are!
Then, carefully reinstall CPU, making sure you have pins arranged right, reapply grease and heatsink. Make sure heatsink is very smug & tightly attached to CPU, no wiggle at all. I did a build once, thought I had CPU down tight. Turned out I didn't. Reinstalling heatsink to CPU worked for me.
I hope this helps!

 

thnx bruhowes , I will check this right now but first , I removed all the rams and I heard no sounds and the pc kept rebooting could it be the motherboard or the power supply ?

 

I saw this topic and wondering if we have the same problem? http://www.tomshardware.com/forum/page-252166_30_50.html

 

OK, no dust bunnies in Heatsink. My next step would be to CAREFULLY remove heatsink & CPU. Check to see if no thermal grease in the pin holes. (Hope you have good eyes! Use a magnifying glass!) wipe away old grease from both CPU & the heatsink. Make sure nothing looks bent or out of shape.
CAREFULLY reinsert CPU. Make sure pins line up! Clamp down to Motherboard.
Put a new pea size drop of thermal grease. Unless you are overclocker, any old computer thermal grease will do.
Again, carefully reinstall heatsink. Make sure it is down tight. No wiggle room. All pins secure. (I once did a build where I did not notice that heatsink was just a tad loose & had same problem you described at beginning.)
Make sure heatsink is tight!
Then, with minimum amount of extra stuff, try booting up again! (You will need video card (if not onboard), keyboard, etc!)
I hope & pray it works!

 

Michel, If you follow Post #3 (by runner) and put all your System specs in detail, you will probably get more expertise with regard to your problem.

Go to top left of Windows BBS and click on User CP.

I've looked at your Posts so far and all appear to be pertaining to this on-going Restart problem. If you are not able to undertake any work on your computer, I would strongly suggest that you get a Technician to sort it out for you as you may do irreparable damage to your comp - if you haven't done this already.

You appear to be jumping to conclusions without carrying primary checks first.

Please fill in your System Specs as first requested. Neil.