04-15-2019 01:10 AM
I have a Lenovo Thinkpad T440s University 20ARS0BH00 with 4GB Ram soldered in and an extra 8 GB as a SO-DIMM in a slot. About a week ago my system was feeling very sluggish and I went and checked Taskmanager and noticed that my ram was full while just browsing. I fired up cpuz and weirdly only 4GB Memory was displayed. Then I went to BIOS and even there only 4GB was recognized. I did not drop my laptop so a loose RAM module was unlikely, but I opened the case anyway (with antistatic wrist strap attached), carefully removed the DIMM, cleaned everything with pressurized air and put the Ram back in. After booting back into BIOS, still only 4GB is displayed.
Does someone know what the problem could be?
04-15-2019 01:12 PM
It could be that the DIMM has failed and it could be that the motherboard (slot or memory controller) has failed. The only way to know which is to swap in a known-good DIMM. The DIMM is most likely the cause of the problem. They do occasionally fail.
04-15-2019 02:27 PM
I am getting a replacement DIMM in two days (exact same DIMM as the original). I really hope it is the DIMM. Can anything be done if it is the slot or would I need to replace the mainboard?
04-15-2019 11:01 PM
I have a rework station so I tend to look for burned capacitors or cracks, In most cases I waste some time and don't fix anything.
04-16-2019 10:33 AM
04-19-2019 04:35 AM
04-20-2019 01:44 AM