IgorK

Optical blu-ray drive Lite-On DH4B1S intermittently is not recognized by the system WinXp Pro SP2. Intel motherboard DG35EC with the latest chipset and BIOS. The drive has the latest firmware. Periodically after the system is boot up I can't see the optical drive in My Computer. I press the sleep button and set the computer in a standby mode, then acrivate PC back and now can see the optical drive.

Any help much appreciated.

Thank you.

dai

try a new data cable on the drive

IgorK

I did changed cables, no luck, I changed SATA port, removed all related to the blu-ray drive software (Power DVD set), tried another drive same brand. The problem is still here. Sometimes CD/DVD drive is recognized sometimes not. Currently I removed "LowerFilters" from the registry, will see if it works.

Thank you,

dai

if it does'nt
what are you running
video card
cpu
m/board
ram
power supply
brand
wattage

check the listings in the bios for voltages and tempretures and post them

IgorK

Hi,

Playing with the registries did not resolve problem.
Here is what I have:
- Intel DG35EC motherboard with Intel Core 2 DUO E8400 3.00Ghz processor
- 4 GB (2x2GB Modules DDR2) RAM
- ATX 650 Watts power supply
- NVDIA GeForce 9800 GTX+ 512 MB video card
- Lite-on DH4B1S Blu-ray CD/DVD/BD R/W SATA optical drive
- ST3320620AS 320GB SATA HDD
- WinXP Pro SP2
Data from BIOS: Processor Temp 48C
Internal Temp 35C
V12.0 11.43v
v5.0 5.059v
v1.25 1.298v
Vccp 1.118v

I noticed that the hard drive provided me a symptom which is related to the problem. When PC boots up and HDD LED on the front panel is flashing in accordance with the HDD activity, everything is going OK, the CD/DVD drive is recognized. Another time when PC boots up or going active after a while of the stand-by mode the HDD LED stays constantly ON, not flashing and CD/DVD is not recognized. However the PC starts up successfully and all applications work OK, I can here the HDD activities but the LED is constantly ON. This situation happens sporadically.
I am thinking about replacing the SATA HD with an IDE ATA HDD.

dai

what brand is the psu at 650w you are at the min. required but it needs to be a quality unit not a cheap generic oem supply

IgorK

power supply is not an OEM. This is Ultra LSP650 650-Watt Power Supply
AC INPUT 115V/230V - 60/50Hz
DC OUTPUT +3.3V 24A; +5V 32A (190W); +12V 38A (456W) -12V 0.6A (7.2W) -5V +5VSB
650W Max
Combined
Watts 24A 32A 38A - 0.6A - 2A
650W

IgorK

The Power supply is not an OEM.
It is Ultra LSP650 650-Watt Power Supply - ATX, SATA-Ready, SLI-Ready.
DC OUTPUT +3.3V 24A(190W); +5V 32A(190W); +12V 38A(456W) -12V 0.6A(7.2W) +5VSB 2.5A(12.5W)
650W Max Combined
Do you think it can be a source of the problem?

dai

can you try the drive on another computer

IgorK

I wish, however I do not have another PC with SATA supporting motherboard.
I still think to buy a small IDE HDD and install XP on it and see how it will work with SATA CD/DVD. I suppose that combination of SATA HDD and SATA CD/DVD on this Intel DG35EC board is not quite compatible.

Thank you.

dai

can you ask a friend to try it in their computer

IgorK

Finally I resolved problem with Optical drive Lite-On not recognized by WinXP Pro.
As I already mentioned in my previous post, "when PC boots up or going active after a while of the stand-by mode the HDD LED stays constantly ON, not flashing and CD/DVD is not recognized." So I disconnected my Lite-On optical drive from the motherboard and tested PC for a week. Everything was perfectly OK. I concluded that combination of SATA HDD and SATA CD/DVD on Intel DG35EC board was bad and would never work properly since I have already tried all possible and impossible variants. My resolution was to split CD/DVD drive from direct connection to motherboard. I bought a Iogear SATA 3Gbps Int 2 Port PCI-Express Card, install it on the motherboard and connected CD/DVD to this SATA PCI-Express card. This configuration working great. PC boots up instantly, HDD and CD/DVD drive are recognized without any problem.

Thanks for all your advises.

dai

glad you have it sorted and posting your fix