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XP Computer Reboots Every Couple Minutes

Started just yesterday. I have scanned with adwcleaner and rebooted. Also removed a rootkit using a Kaspersky tool. There is no hardware conflict in device manager and I just restored the computer to January 4. It's an Asus computer and there's no hardware update or hardware check utility software on it.
7 Solutions
mebaby333It AdminCommented:
If you boot into safe mode does it do the same?
mebaby333It AdminCommented:
I would boot into safe mode with networking,
download and run Rogue killer and Malwarebytes from here:

Rogue Killer:


Uninstall any suspicious software and scan until clean...
helpfinderIT ConsultantCommented:
do you see any pattern it reboots when you do something particular?
random restarts could be faulty memory module - it´s quite easy to check - download MemTest and make a bootable CD or USB. Run it for a couple minutes (to run at least 2 complete testing processes) and see for the result
Another problem could be PSU or overheating - check for some spare PSU if you can and test. Also chekc temperatures by som free tool
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Dan CraciunIT ConsultantCommented:
Eliminate first the physical possibilities. Get UBCD and:
- check your RAM
- check your hard drive(s)
- check that the cooling is working (either in BIOS or with CpuStress)

Afterwards, if all is well and the restarts still happen, do a repair install of XP.

The other suggestions are reasonable, but I would step back a bit first.  You need to know if this is an issue with software (Safe Mode, AV scans, repair install, etc. all try to address that) or hardware (memory, HD, PSU, overheating try to address that).

Running Memtest from a CD is an excellent approach here.  You will be testing the memory along with other hardware.  CpuStress or the BIOS would be a good alternative, too.  It won't test the hard drive(s), though.  If you are seeing reboots every 4 minutes (is that time consistent?) and you run Memtest for an hour or more without reboots, you can presume that the memory and PSU are good and that overheating is not the issue.  That pretty much leaves hard drive and software issues as the likely culprits.

"Also removed a rootkit.."  is a real concern.  It is good that it was removed but you may be seeing lingering issues from it.  I would run sfc /scannow to rule out some of them.
i would open the box, and clean out all dust; verify that all fans are running properly (cpu, case, PS)
you can also verify the temperatures by installing speedfan :
Check that the cooling is working. Change heat sink compound.
mebaby333It AdminCommented:
I would just scan it... root kits can do crazy things and the cleanup of them can cause many issues.... including driver issues which Rogue killer will take care of... If you did not have physical problems before then I doubt it has anything to do with hardware... just to reiterate my initial post... otherwise you may waste time fighting a fire that does not exist..
Scott ThomsonCommented:
Ok here is my list of checks to eliminate each issue step by step.

1. download a memtest and burn it to a cd or usb to test the ram (although i would doubt that is the issue)
2.Boot into safe mode and see if the same issue occurs
3. run msconfig and go into startup and make sure you disable everything you don't know
4. go into scheduled tasks and delete anything you don't know

these are your 4 most likely issues
bobox, how is it going?  any progress?
bobox00Author Commented:
Scanned it in safe mode, rootkit scan, blew out dust, reboots even before loading windows and also in safe mode. Suggested they replace computer as it's more than 5 years old. Thanks all.
tx for feedback !
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