Computer constantly restarts at Windows XP Loading screen?

Question

Whenever I start up my computer, it goes to the screen where it says Safe mode, Last known good configuration and Start windows normally. I have done all 3 with the following results:

Safe Mode: All the drivers load on the screen and once it gets to mup.sys it stops for roughly 10 seconds then the computer restarts.

Last Known Good configuration: Windows XP Loading screen comes up, about 2 bars go across then the computer restarts.

Start Windows Normally: Once again the windows xp loading screen comes up and does roughly 2 bars then restarts.

At first I suspected the power supply, so I replaced that with a brand new one and the same thing still happens. Any ideas? Thanks in advance

Answer 1

Thsi is a hardware problem, anything froma mouse to a video driver. The problem you are having is not normally related to the mup.sys file. It usually is the file that loads after it, agp440.sys (installed if you have an ATI video card), which is your video card. But sometimes, the problem may be resolved by simply unplugging your mouse before booting. If your system boots after you unplug your mouse, then you need to update the USB (first link). I would also run chkdsk to repair any corruption:
a. boot from XP CD
b. run it in recovery mode (choose option R in the windows recovery console)
c. run "chkdsk /r"
d. Type "exit" and restart Windows normally.

Answer 2

For those who have answered boot in safe mode/last good configuration, shut up and reread the question.

I have experienced this problem many times, you need a fresh install of windows, the best way to access windows and I'm really not certain why this works.

Open the computer take out the bios battery, replace 10-20sec later, try booting then, it may work straight from that.

Else boot with a NTFS for dos cd/floppy and copy the files from that screen.

Answer 3

I have built computers for many years and the only reasons i have come into this problem is because a bad windows install, a program that has to do with system performance crahsing the system, or messing with the Motherboard Bios mainly with CPU OC, and memory OC.

I hope this helps you.

Answer 4

it sound as if you have a hardware problem. try removing your ethernet card and your sound card if it is a pci card. i recently repair computers that had a bad sound causing the problem and also a computer that wouldn't do nothing that was a ethernet card and one that it was a video card. all were non-onboard items. a rent problem like yours was al the person decided to over clock the processor and got the result you have. if you recently experimented with the bio setting, change them all back to the default settings!!

Answer 5

i just had this problem a while ago. when your computer starts up, press delete(i think, what ever it says to press to enter set up) go to one of the bios, the one with date and time (forgot which one, top left i think) and change it to the current date. DO NOT CHANGE ANYTHING ELSE!!! save and exit, let it boot up as it normally does, and you should be fine. good luck

Answer 6

Possible virus or trojan...try scanning in safe mode...use your latest virus software program...OR if by chance you've made a backup, go to "last known good configuration" and restart it from there

Answer 7

your hard drive may have a bad spot in it. First try booting windows from the disk if it works make a copy of everything you still need/want and then you may want to get a new hard drive (take it in to get looked at first- I'm good but don't know eveything)

Answer 8

Sounds like you've got a virus. Get thy PC to a techie.

Answer 9

If you can get it to run in "Command Prompt" mode you can execute a system restore from there.

http://support.microsoft.com/kb/304449

Answer 10

Definite Virus.

stop rebooting cuz you're making it worse.

take it in to get it fixed. they probably won't be able to save it.