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gpjoe
Paper Tape
Posts: 4
Registered: ‎11-03-2011
Location: USA
Views: 402
Message 1 of 8

600X memory upgrade problem

OK, I got a really nice condition Thinkpad 600X with a 500mhz processor from a friend and installed Windows XP. The PC runs fine but I get a lot of hard drive activity. Thinking it was the OS using virtual memory I decided to upgrade the RAM. I picked up two 256MB PC100 low density sticks of RAM and installed them. Now when I boot I get a 255 error, which is a memory error.

 

I have tried each stick of RAM individually, in both of the RAM expansion slots with the same result. I flashed the BIOS and still no joy.

 

Is the problem the low density configuration? I had read that the low density RAM would likely be more compatable than high density. True?

 

Any thoughts or help would be greatly appreciated.

Guru
Posts: 7,626
Registered: ‎11-23-2007
Location: USA
Views: 382
Message 2 of 8

Re: 600X memory upgrade problem

Welcome to the forum!

 

Your DIMMs have 8 chips per side, for a total of 16 per 256MB stick, correct? What brand are they?

Cheers,

George




In daily use: R60F, R500F, T61, T410

Collecting dust: T60

Enjoying retirement: A31p, T42p,

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W




Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.
.
gpjoe
Paper Tape
Posts: 4
Registered: ‎11-03-2011
Location: USA
Views: 376
Message 3 of 8

Re: 600X memory upgrade problem

Yes, 16 chips on each stick of RAM. No brand, just generic. I don't see any name on the chips or PCB. I would also like to point out that there was a single stick of 128mb PC100 installed in the PC when I got it (IBM brand). It only has 4 chjps per side (8 total) and it works fine. Funny, I bought the low-density RAM (ebay - new) to AVOID compatability issues. I suppose that this is what I get for being frugal.
gpjoe
Paper Tape
Posts: 4
Registered: ‎11-03-2011
Location: USA
Views: 375
Message 4 of 8

Re: 600X memory upgrade problem

Oh, and thank you for the welcome and responding to my query. Regards, Gary
Guru
Posts: 7,626
Registered: ‎11-23-2007
Location: USA
Views: 369
Message 5 of 8

Re: 600X memory upgrade problem

My best guess is that the RAM you've purchased is of substandard quality, making the good old 600X unhappy...try locating the original Micron RAM (IBM-branded) for these machines, either on feebay, or post a WTB ad in TPF's marketplace:

 

http://forum.thinkpads.com/viewforum.php?f=11

 

Good luck.

 

Cheers,

George




In daily use: R60F, R500F, T61, T410

Collecting dust: T60

Enjoying retirement: A31p, T42p,

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W




Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.
.
gpjoe
Paper Tape
Posts: 4
Registered: ‎11-03-2011
Location: USA
Views: 365
Message 6 of 8

Re: 600X memory upgrade problem

I'm working out a refund with the ebay seller right now.

 

I will try to find some branded RAM.

 

 

Thank you again George.

Retired Guru
Posts: 1,928
Registered: ‎05-16-2008
Location: USA
Views: 358
Message 7 of 8

Re: 600X memory upgrade problem

if you can't find Micron RAM (IBM-branded) , kingston will work I have a mix of micron & kingston in my 3 600x



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GMAC
Guru
Posts: 7,626
Registered: ‎11-23-2007
Location: USA
Views: 354
Message 8 of 8

Re: 600X memory upgrade problem

Take a look at this, and act fast while it's still there:


http://forum.thinkpads.com/viewtopic.php?f=11&t=100403

 

100% trustworthy seller, dealt with him many a times.

 

Good luck.

Cheers,

George




In daily use: R60F, R500F, T61, T410

Collecting dust: T60

Enjoying retirement: A31p, T42p,

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W




Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.
.

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