I have a Dell 5150 Dimension. Just replace the power supply due to the amber light was blinking and computer would not turn on. Once up had a system password that I could not get pass so I shut the computer down and reset the system password. Now the computer comes up with " Floppy diskette seek failure. strike F1 key to continue, F2 to run the set up Utility". Went to F2 and turn off the diskette drive and check the boot sequence. The boot sequence to set as follow 1. Onboard or USB CD-Rom Drive,  2. Onboard SATA  Hard Drive,   3. Onboard or USB Floppy Drive (not present),  4. Onboard IDE Hard Drive (not present). When I save and exit and computer then comes up with A read error occurred. Would anybody know how I can get my computer up and running.