I'm having the same problem!! I have an dell precision m6600 with a09 bios firmware. I just put in a brand new intel 520 ssd this weekend. After reading a couple of online forums I set the bios to raid.. but, after installing the intel control panel it listed the drive running at 3gb/s. I reinstalled the os(windows 7 pro x64) after changing the bios to AHCI. The hard drive now runs at 6gb/s. But, in both cases I had issues with the computer intermittently detect the hard drive on both cold and warm boots. Once i get into the operating system it randomly freezes. The hard drives firmware is up to date, and from what I can tell so are the drivers.
I hope intel comes up with a solve soon.
So far so good, I couldn't find the LMP under Windows Power Options.. so I ran the reg edit.. Its like night and day.. I can't thank you enough Starchild!!! Now I need to wait for a BIOS update so it doesn't take 3 restarts for the bios to see the hard drive.
Glad I could help!
The problems are related to the SandForce controller the 520 uses. Other manufacturers, like Corsair and OCZ, that use this controller in their SSDs have all issued firmware updates addressing these issues. Yet Intel continues to fail to recognize these problems. If you can, please visit my other thread here and perhaps show your support by posting a reply. Maybe we can bring some attention to these issues and get a firmware update.
Unfortunately, this didn't solve the freezing problem for me. I have the LMP set to active / active in the windows power options, and the SSD Toolbox says DIPM isn't supported. However, I still had the drive hang in the on state (LED lit) over the weekend. It seems more likely to happen when I login remotely, but it also can happen right after reboot while actively loading up programs (so I don't think any type of power management comes in to play there). Any other ideas on how to fix this? Should I just RMA?
I'm having the same problem with my Intel 520 Series SSD...and unlike you, I have a newer system and I've only had the drive a little over a month. Now, I've tried everything in attempts to resolve the issue and even called Intel's technical support and all they wanted to do (after explaining my problem) was either replace it or refund what I paid for it.
I'm really disappointed with Intel at this point...
Here's my PC's Build:
Asus M5 A99X EVO Motherboard
AMD FX-8150 Octa-core Processor
Ballistix by Crucial 8X4 32GB Tactical Series RAM
Sapphire HD 7790 GPU by AMD Radeon