Hey guys, Its a long Post, but please read it and help me out

I dont really know where to start so im gonna go ahead and explain things as they come into my mind.

So one day I try to turn on my pc and it wouldnt turn on, so i check everything and i find that my MB fried on me for no reason. I bought a new motherboard and i put it in And i also borrowed my friend's PCI-E card SINCE no AGP motherboards are being sold anymore apparently (and my videocard is AGP), and everything starts going nuts on me.
So here goes...: Windows minifreezes on me like a hiccup, u know if i move my mouse in a uniform motion from 1 end of the monitor to the other it would freeze for a tiny bit then skip to where it would have been if it didnt freeze, then it moves normally and then mini freeze again (or hiccup). and it does this in uniformly also, so every 1.5 seconds the mouse/video/watever im doing kinda does a hiccup then keeps moving. Now its not only the video that does the hiccup/freeze, it also happens with the sound (most of the time).

Now this only occurs at certian times, not just randomly, like now im just typing this topic out, there are no freezes, no hiccups, However as soon as i Start a game, Move a large file, Stream Video, listen to music or start a program, it will do the mini freeze and it depends on when it will end. For example with video streaming, as long as the video im watching is still streaming (or downloading onto my pc?) it will keep doing the hiccup, as soon as i have the full video clip downloaded, the hiccups disappear!. another example is with gaming, when i turn on a game depending on what type of game it is, it will either freeze/hiccup for the whole session or during certain periods of times. its really weird.

Now i did my part and tried to Figure out what part of the pc is smoking (fill in the illegal substance of ur choice). First i tackled the HDD, and i found out that it had an issue, So to MAKE sure it was THE part that was unfit with the rest, i went and put it in my friend's PC and ran it (now i have to freaking call microrobbing bastards for "significant hardware changes") and the HDD ran fine!. I mean litterly ran like a new hdd, Large files were moving way faster, No hiccups no nothing. I even started games and not a single frame skip. nothing, So the HDD checks out, Next i looked at my Ram, and i swapped my ram for another stick, and the problem didnt disappear so its not the ram. Then i went for the next obvious thing, the videocard. I hardly think that the Videocard has anything to do with the hiccups because even though i get hiccups in games, i also get them when i move large files, or when im playing music, so I dont c how the videocard fits in these 2 situations, So the last thing is the newly bought motherboard. Is there a possibility that the motherboard is defective? Has anyone heard of other ppl's PC WORKING just fine and in certain situations, they become useless due to motherboard problems?

It is not a virus or spyware issue im certain of it . I honestly thought that it was just windows being gay since i changed the motherboard and didnt format, but after i booted my windows on my friend's PC, and everything ran perfectly, im 99% sure that its not software issue. I defraged, and checked for viruses and spyware.

Here are my system's specs:
intel P4 2.4 Ghz
Samsung 80 gb hdd
ati x1300
512mb ddr
Asrock p4vm890

BTW just to clairfy the issue with my HDD, for some reason the HDD wouldnt start at all, it would be completly dead SILENT, so the way i fixed it is by tapping on it . now now dont say this is ur problem because i checked with a verity of Disk repair and disk Monitoring software the performance and fittness of my HDD and it was free of errors.

oh another thing for some reason my Videocard overclocks itself so i have downclock it using and overclocking software, But Trust me the card works fine. Im buying a PCI-E card and putting in my system just to make sure the video card checks out.I would reinstall Windows although you don't think that is the issue, many ppl here will tell you that Windows can act really STRANGE after a major hardware change.ya i thought of that too, but then Windows was acting fine when i put my hard drive on my friend's PC. it was acting like its supposed to. now my friend's PC is completly Different setup than mine. not even his motherboard is the same as mine, yet windows wasnt acting upWell i'd say you got lucky then...XP is by nature and design not good at being swapped from one machine to the next...

First thing i would try would be to install the new MBoard drivers.

If that doesn't work read the link below...

Repair Install of XP

Read it carefully paying special attention to the warnings and then print out a copy for reference.well since I only have 1 and a half day left till activation, i might as well backup and format my C drive and keep my D with backed up files. I was really hoping it wouldnt have to come to this. I will format and report back with the results So this is an unactivated version of XP...that would have been helpful information from the git go...the reason its "unactivated" is because Micro$hit thinks its nessessary To activate my windows a 2nd time when i put my HDD on someone else's PC.

It gave me the error that I have done way too many changes on my pc (which i guess is true cuz i put the HDD on someone else's PC) and i need to activate it..and they only gave me 3 lousy days

Edit: I ended up calling microsoft and activated windows to give me some more time to backup, if no solutions other than a format are suggested in the next few daysI just wanna update everyone that my issue was solved by basically a format

lesson learned. Once windows starts acting stupid, Format !

Takes 30 mins and i got microsoft number on speed dial.

but since im on a windows, im never without issues.