I need some help. I had a ACER 2010A running WinXP on a Athlon 1400 computer, Asus MB, 512 MB RAM, two HD in IDE1 (to get advantage of ATA100), and CDRW as master and Artec DVD in IDE2. The system (although CDRW and DVD share the IDE channel) have worked fine for a year.
But two months ago CDRW started to spoil CDs with buffer underruns. The CDRW internal buffers swings from 98% to 7%, stops the recorder and then fills the buffers and start again. CPU usage is very high (>90%). It happens with every CD brand. CloneCD also fails when recording. If I select slower speeds, buffer remains stable. NeroInfo tool says HD are DMA mode 5, DVD is DMA mode 2 and CDRW is PIO4 (Acer says this is the rigth mode for its recorders). I have tried to install drivers, uninstall last applications, remove every serial device, clean register...It is driving me mad, because it worked three months ago.
Has anybody any suggestion? Clean the hardware? Format the HD?