Summary: I am trying to repair a Windows XP installation, but the repair process hangs just after the first reboot the one following the text-mode file copy. Detalis now. I'm trying to follow acrobat's "state-of-the-art" post format. First, my PC specs: Motherboard ASUSTeK P5B, with AMI BIOS Rev. 1604 Intel Core 2 Duo E6420 (Stock speeds) ASUSTeK GeForce 6200 TurboCache PCI Express 2x 2 GB Kingston DDR2 PC2-5300 4-4-4-12 1x 320 GB Western Digital Sata drive WDC WD3200JS-00PDB0 1x LG DVD-ROM HL-DT-ST GDR-H30N EIDE 1x LG DVDRAM HL-DT-ST GSA-H44N EIDE Important 1) Everything is at its stock speed. Nothing has ever been overclocked. 2) Entire PC is two years. Problem (aka The full, long and sad story): My fully-functional-and-updated WinXP-SP3 installation was working fine. Probably I took a bad virus, indeed all of this started with Kaspersky Internet Security 2009 (KIS) not starting at all: not at windows startup and not if manually "launched". I found a strange (=strange name, unusual file location, unusual file position in process-tree displayed by ProcessExplorer) process running in memory, uploaded it to Kaspersky Online Scan Service and it resulted infected by a trojan. I restarted in safe mode and deleted the culprit. Then I uninstalled and reinstalled KIS from scratch but it still didnt work. After a week trying to get this fixed with Kaspersky support, something new happened: everytime I logged in, I received a "Generic Host Process for Win32 Service" crash. Unfortunately the service crashing was RPC Service, so a 60 seconds countdown was the only time I had to troubleshoot before rebooting. This happened both in "normal" and in "safe mode". I still wasn't alarmed, so I didn't take detailed notes about error codes and stuff. I just guessed some system file was corrupt and tried to repair the Windows installation from WinXP SP2 CD (the only setup CD I have). The repair method I used is the following: 1.boot off WinXP Setup CD 2.choose to install, not to repair, ad first choice 3.when it searches for previous WinXP installations, it detected my C:\WINDOWS install 4.here I decidere to "R"-"Repair" The text-mode file copy completed flawlessly. After the first reboot, the setup GUI is shown and here I am stuck. It says "39 min to completion" forever. System doesn't properly "hang", because scroll bar animations and commercial texts (you know... "more power"... eheh) are changing. But installation doesn't go further. What I have tried Googling around I found this kind of errors can be due to a WIDE range of causes: from popped capacitors, to broken RAM, to dust, to corrupt software. So I tried the following: 1.checked for popped capacitors: MOBO looks OK 2.dissipators and fans are quite clean, however I cleaned them 3.unplugged and plugged PCI-Express VGA (MOBO doesn't have integrated video card) 4.removed 1 ram stick, then the other, then swapped them. Not being able to fix the installation, I tried to do a fresh new install on D:\ partition (it was luckily empty). The idea was to try to confirm or exclude a software error due to the existing installation I was trying to repair. But I got stuck againg, in the same point of the repair process. I was sure it was the RAM, so I ran a 9-hrs overnight memtest while both sticks were installed and I got 0 (!!) errors. So I decided to build a new WinXP SP3 CD and I did it this way: 1.downloaded SP3 from microsoft 2.got all original drivers CD that shipped with my hardware 3.got my previous WinXP SP2 CD. 4.using nLite and the 3 preceding items I built a new WinXP SP3 CD with my hardware drivers already on it. Using this CD I was able to complete the new fresh install on D:\ So I thouht that was going to let me repair also my original C:\ install, but it still hangs in the same point: after first reboot. So now I am here posting for help, attaching setup logs produced by the repair attempts done with this home-built WinXP SP3 + hardware drivers CD. Only other thing I can mention WinXP-based boot CDs, such as UBCD4WIN 3.5, run flawlessly. Temperatures: Reported by SIW: SYSTIN: 36°C CPUTIN: 34°C AUXTIN: 119°C (what is this? anyone knows?) CPU FAN: 2900 rpm Intel Core 2 Duo E6420, Core #0: 27°C Hard Disk: 34°C So what help do I need: In the final analysis I'd like to repair my existing WinXP C:\ Installation, first because I want to understand what happened and second because, even if I have now a new and working D:\ install, I'd like to avoid reinstalling everything.