DVD drive has stopped reading CD and DVD
My DVD drive has stopped reading any disc inserted in the drive when the computer is running. The PC is exactly a month old today and was working fine until last Thursday, I was able to install software from CD. Then on Weds I created some CD's containing a couple of videos I had shot and out of three tries only two worked. On Thurs when I came to install some more software it would not read the CD at all ( I don't know if the problem with writing to CD then reading are connected).
I am running Vista Home Premium 64 bit and the drive is HL-DT-ST DVD+_RW GH30N.
I contacted the munufacturer who ran some tests then got me to boot the PC with the OS disc in the drive and it booted fine from the disc and then went on to load windows successfully with all accesibility to CD/ DVD restored BUT when I turn it of and on again it has lost the ability to read the CD again.
The manufacturer has told me they can fix the problem but for a charge of £39, so they obviously think it is a software problem, but they won't tell me how to do it myself. Does anyone know? Both Anti-virus and Defender checks show no malware on the PC.
Please help, as I can't run the PC with the boot disc in the drive every time I want to read a CD, and I don't really want to re-install the OS as I had to do that once already in the first month.
This is my first time here so if I have missed anything out please ask me.