I have a brand new custom built computer, pretty good hardware, and i have had this problem with the timer being laggy, ie. The clock runs slow, but resets itself to the correct time on reboot, (the time in bios does not lag, it is fine) when 15 seconds pass on my computer, it has been 1 minute 15 seconds on my stopwatch.
so my computers time is about 1/5 of the normal time, and the issue isn't just with the clock, with any timers, ie, animations, any counters, for example on my websites i build if i have a timeout for like 5 seconds, it will take 25 seconds, so it's something to do with the windows timer, i have seen other people with the same problem but i haven't found any solutions.
*I have the newest bios for my motherboard
My computer specs are:
*1TB hitachi 7200rpm
*4gb DDR2 corsair Ram
*AMD Phenom II X4 965 Black Edition 3.4Ghz
*GeForce DDR5 GTX 480
Update: 60 seconds on my computer took 4 minutes 58 seconds on my stop watch.