Need help with a couple problems

[cgtwins]

My brother and I built a couple computers and have had a bunch of problems with them.

1. We can't get the floppy drives working on either of them. The drives can't read that there is a disk in them and it seems to strip the id address from the disk. We have tried changing the cables around and tried using a drive off from an old computer and still can't get them to work.

2. We tried installing windows and it wouldn't install properly. We ran memtest and got a lot errors, so we replaced the ram with some corsair ram and everything worked fine with no errors. Now one of the computers is getting a BSoD(0x50 error) on start-up and reboots. We ran memtest after that and the ram failed pretty much every test. We tried that stick in the other computer and it could boot windows and seemed fine, but it still failed in memtest.

system specs:
Rosewill TU-155 case w/ 400W PSU
Athlon 64 3400+
Epox 8kda3j motherboard
512MB Corsair Value Select PC3200 DDR RAM
Samsung 120GB SATA HD
Gigabyte 6800gt
NEC floppy drive

Could the problem be that the motherboard is bad and causes the ram to have problems? We didn't do any overclocking on either computer. Any help with these problems would be very much appreciated.

 

[Malak]

1. Ask yourself right now, "Do I need a floppy drive?" As far as I know, no software is produced on floppies any more, even simple drivers for new hardware. Some companies even have the option of not having a floppy drive installed on configured systems. They are horribly outdated and more trouble than they are worth.

2. You know my friend built his own computer and he had BSOD problems too, mostly because his mobo hated some of his other hardware and they just wouldn't work together. This is the reason why I always purchase my computers made by people who know what they are doing, because I know if I tried to put it together I'd have problems like you are having now. Yeah, it's cheaper to build your own. Until you realize your hardware isn't compatible or fails shortly after. I pay extra to make sure that doesn't happen

 

[nick1985]

my money is that your crappy PSU is the cause of some of your problems

 

[JustAnAverageGuy]

I'm gonna guess either Power supply for possibly the motherboard.

Your Case?