Give this advice a try for the CD-RW problem
In Device Mangler - select each optical drive, then click remove. Then click Search for New Hardware. If that doesn't fix it, do the same...only instead of searching for new hardware, reboot the PC. Drives will be found during start-up.
In Device Mangler - select IDE ATA/ATAPI controllers. Under it, you should see Primary and Secondary IDE Controllers. Select each one, then Properties>Advanced Settings. In drop-down list, select DMA If Available for each channel. Then reboot. Now any DMA devices will use DMA. this fix worked for a bunch of people so maybe try it first