The bios says that it is an 850 mhz processor, but the Intel frequency utility and XP both see it as 700 mhz. So, if automatic stepping is set in the bios, the computer will power itself off when using the AC adapter (battery works fine). If bios is set to disable stepping, everything works fine and it is seen as 700 mhz processor with no stepping. I have tried reseting bios (Fn-F11), but it still sees 850 mhz and powers off with stepping. How can I get the bios to see the processor correctly (I have already flashed the latest bios)?
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It has been a while but I think it isn't a zif but a standard low profile socket. You need a good light and check the edges to see if you can see the layers or where the cpu edges are. You should see the color differences between the plastic or the socket and the cpu. From above it will look like just a cpu but from the sides you should see the cpu overhand the socket a small bit or be flush with the edges.
The cpu has to be a M series P3 and you may need to adjust bus speeds and/or ram speed to make it work. May also have to upgrade bios as well.
what did you mean not working ?? didnt see the new Ram memory ?/ or didnt boot at all ....anyway ...when adding new ram memory ..first thing you do is to remove the Bios battery for to let bios on defaults and let it be able to read the new added unit ....second ...be sure the new added ram is compatible and in the same frequency ,then remove the battery like I said and in the last ...reinstall the operating system ....always look at the boot to see if the ram memory that is displayed is the same value with the one you know that actually is installed on the slots...it should work if this was just an option to make it faster ...and not a wild guess cause it use to have issues and didnt boot before...
When the first screen displays, immediately press the F10 key if your computer was built in 2006 or later (came with Vista). Press the F1 key if your computer was built before 2006 (XP or earlier). Press the key once every second until a BIOS Setup utility screen opens.
Check in the BIOS to see what processor is rated at (upon power-up of laptop hit F2 key to enter setup menu). Depending on what model Centrino you have, the speed rating should be at around 1.2 GHz or better. If speed checks out in the BIOS then run diagnostics on laptop to see if the motherbrd has a bottleneck issue. To do this, hold down the <FN> key and then push the power on button. Problem could be either your processor or motherbrd.
It's possible that the XP is using the extra resource or processor usage, and there isn't anything that you can do. However, It's also possible that this machine was configurated for 2000, and that it just needs drivers for XP. You can start by going to IBM's support site and doing a bios flash to the most recent bios, and checking for a chip set driver update, patch, or for for XP. Also check for any processor speed stepping drivers or updated drivers. Try this and let me know.