Well, a few days ago, I installed a new 128MB SDRAM chip into my HP Pavilion 6330. While this is not the source of my problem, this is when all the trouble started. Once the chip was installed and I restarted my computer, I noticed that there was no sound. I immediately checked in the "Device Manager" and found a conflict with my audio system. It turned out to be a resource conflict between my Nvidia Geforce 2 MX chip and the audio system. To solve this, I changed the resource of the audio system to a free space. Once this was done, windows told me to restart, which I did. This is where all the real trouble happened. After restarting, my computer would not go into windows. It would get stuck in the blue Windows 98 screen and would freeze up. I tried to shut down my computer and restart it, but the same thing would happen. I then went into safe mode and found that windows would load under it. After doing a system diagnosis, I found that the problem was my secondary IDE controller (Hard drive), so I disabled it, which solved the problem. Once I did that, windows told me to restart my computer again, which I did. After windows started up properly, I had two more problems which I still have no clue how to fix. My sound still does not work, which it has no resource conflicts this time, and of course, my computer does not detect my CDROM drive. It works however, since the cd "door" opens and closes fine, but windows does not detect it. When I restart my computer, windows shows a pop up message saying windows does not detect a CDROM drive. I have tried many different CDs to see if it is just a cd, but none work. The company, Hewlett Packard, knows less about computers it seems than a box of rocks. Its technical support, online and phone, doesn't help me at all. I checked in the "Device manager" and found that there is no controller installed for the CDROM drive either. I am stuck. Any clues?