My sister and I both have the Compaq Presario 5834. My computer has always worked fine, but hers has had problem after problem. We finally found out that she had a program that was causing the problems, and deleted it. Her computer worked wonderfully for about 10 days, until her husband downloaded another program off of the internet. Anyway it shut her down and brought her back up in factory settings. I wasn't sure what had happened so I just went over and shut it down. The problem was that now it won't come back up at all. It stays in dos. So I inserted her windows 98 cd and ran scandisk and after two days we finally got it to go through scandisk without any errors, but guess what, now it says that we need to run scandisk for windows because it has an"invalid long filename" error. We entered through that because I didn't know how to fix it and it didn't give any options and then hit enter to run Windows 98 from the cd. Unfortunately the Registry Repair Results throw out an error saying - error in system files - delete files to free up disk space on windows drive. The problem is I don't know how to do this. Can anyone tell me step by step directions to fix this, and if you can is this even going to work? Please help me. Thank you.