r52 harddisk working in PIO mode

[thephenom]

i just bought an R52 last week. despite running on a 1.8ghz processor, the machine was running very slowly. on further investigation, i found out that my hard disk (HTS541060GN1800) was running in PIO mode instead of the usual UDMA-5. i have already enabled DMA in the BIOS without effect. can anybody shed some light on this problem?

thanks in advance.

[SeanM]

Just change the controller back to DMA in device manager.

Did you set your machine to not suspend when you close the lid?

[thephenom]

the device manager controller is set to "DMA if available". and yes, the machine does nothing when the lid is closed.