no disc in drive e:

I have a Dell Dimension 2350,my specs are:55 g hard drive,pentium 4 CPU,1.80
ghz,256ram,lite-on 48X max cd-rom and samsung cd-r/rw sw-240 b drive.My
problem is regardless of what type of disc I put in my cd-r/rw drive,it will
not be read or written.Tried burning some cd-rs,but everytime without fail,I
get an error message(No disc in drive e.)I tried uninstalling and
reinstalling the drive,but still got the same error message.Tried updating
the drivers,firmware from the manufacturer,did not work.Contacted Dell and
had one of tier 1 techs,remotely try to fix the problem,no luck.Tried
cleaning the optical eye,no luck.Tried several different burning
programs,(Roxio and Nero)when it came to finalize the cd-r,it gave me the
same error msg....no disc in drive E.Tried burning through Windows Media
Player,no luck...same error msg.The last time this happened I had to carry it
to the comp shop to get it fixed...I really don't want to replace the
cd-r/rw,if a simple solution can be found.I am at my wit's end.please
help...thanks...p.s.my cd-rom works perfectly as far as reading discs.


ps.drive e: is my cd-r/rw drive
drive d: is my cd-rom drive
drive c: is my hard drive
drive a: is my floppy drive