My main laptop is down, and I ordered a replacement. To be able to trade I am using a cheap Vostro 3555 from Dell. The problem with the Vostro 3555 is that it had only 2 GB with 1.48 usable, so it was slow. I upgraded to 4 GB of RAM, and it now shows 4 GB (1.48 usable). The usable memory did not increase. This is not a problem on my other studio laptop I had from Dell with Intel processors and 4 GB of memory. I already upgraded the BIOS and chipset drivers for the Vostro. I also upgraded the virtual memory by manually adjusting it, and the computer is now faster but still shows 1.48 usable.
Windows 7? Did the memory allocation expand in the Resource Display bar for the memory? Maybe Windows allocated more to be used as cache/standby and left a smaller amount unallocated when trying to be efficient with using the new memory.
I was able to solve the problem. As noted I previously upgraded the BIOS. I then tested memory with Ultimate Boot Disk. While memory passed I noted a strange thing, it showed only 1512 GB of memory while running the tests. I shut down the computer. I took out both memory chips. I then put 1 in 1 slot, and rebooted the computer. The computer worked. I shut down again, and took that memory chip out. I then put the other memory chip in a different slot, and rebooted the computer. The computer worked. I then put the 1st memory chip back into its slot, and rebooted the computer. Now I can see 3.48 GB usable out of 4 GB. Much better.