I've posted on this before but couldn't find the thread sorry so will start from scratch again. Some weird noises (clicking and such) come from the tower then things freeze. I think i used the description of "like a car trying to turn over but can't hold it" before, and that's about right I guess. Several fast clicks then the general "humm" of the tower stops, then sounds like it tries to fire up again and MOre clicking, then gives up again. Does this a few times then freezes and either restarts itself or I have to flick the power. The obvious options would be PSU, Fan, or HDD. If it was the Fan i'd have thought it would have fried the processor by now. However, the (second) last time it happened, I had a blue screen error and when tried restarting it asked for me to insert boot diskette in drive a: I've not got a boot disk for XP though. After an hour or so (and about 10 attempts) it managed to start (i held F8 - which is meant for safe MOde yea?) and seemed ok (so not sure if F8 made any differece or was jus coincidence, as seemed to be workin normaly). Seems XP (pro) doesn't allow you to just make a boot disk from the start menu like with previous versions :rolleyes: Managed to get the file from the MS site but it's 4MB. That's not going to fit on a floppy, and as I said, it's asking for the a: when askin for the boot disk, so burning to a cdr wont work. I know it seems like i'll be needing to replace the HDD sooner than planned, but I guess a boot disk would be useful in the mean time, just not sure how to split it over multiple floppys. Any advice on any of this and what to do next (i'm not really clued up on this stuff so be gentle) greatly apreciated. It's done the clicking thing and froze since and managed to statr straight up first time after (without asking for boot disk). Thanks for any help as always MO p.s where's good place for a new HDD? Only a lowly PIII 450MHz but wuld want a decent sized one.