Recently I have received a coworkers laptop because he asked me to fix it. Like clockwork I inquired about the problem and was told that it wouldn't boot. Looking to see what he meant I brought it home and turned it on. It booted up to the point where the splash screen disappears and you get a mouse cursor for a second or two, then it shows a screen that says something to the effect of "Windoze is preparing your pc for first time use.". After that the screen goes black and the computer reboots and does the whole thing over again. Even trying to boot it into safe mode produces the exact same result. What I'm asking is if I missed anything or if anyone has experienced this problem before and how you fixed it.
What I have done so far is as follows:
Malware check comes up clean by 4 different programs: AVG, Malwarebytes, Spybot, and SuperAntiVirus. Scanning was done by removing the drive and connecting it to another machine where the scan could take place. While this is the first thing I do, the nature of this problem is largely ruled out as most malware writers are out there to steal [your life/time] from you, not be a pain in the ass.
Hard Drive fragmentation was surprisingly minimal (2%). Problems of this nature do sometimes popup like this if hard drive fragmentation is left unchecked. But this was not the case.
Hard Drive integrity check also came up good with no bad sectors. I do not use the hard drive checking tool windoze provides either; instead, I use a program called Spinrite and let it sit on a level 3 scan for a day. Totally clean.
Memtest86 also ruled out the RAM. I let that one sit for at least a day. Nothing.
I don't know what else I can do and if possible I want to try to avoid re-installing the OS as its a pain in the ass to do. Any help would be greatly appreciated. Thanks in advance.