I have been using two Pegasus R6 Series 1 units for some years on a Windows 7 x64 based computer with no problems until now.
When I start the computer with the devices powered on, they make explorer.exe process almost hang with a constant 12-13% CPU usage, rendering Windows unusuable, applications hanging, Recycle Bin impossible to open, and I can't access my files on the Pegasus drives.
They used to work perfectly fine for years and I have not changed anything to the configuration of the machine, applications, drivers or OS, but the problem suddenly showed up out of the blue three weeks ago, without any major update before it whatsoever.
When I start the computer without the Pegasus drive attached, it runs perfectly fine without any od the problems described.
Both Pegasus units are running perfectly fine on Mac OS X, and are in perfect conditions according to the Pegasus Utility. All LED indicators are blue. Both Unit never moved from the shelf they are stored on neither ever had any physical incident.
I did have to replace a failing hard drive in one of the unit once, followed the Promise procedure and replaced it with success, further running and using the unit without any problem for a whole year till this one arose.
Each unit is connected on a separate thunderbolt port on a Gigabyte Z77x-UP5-TH motherboard running its latest Bios version (F12)
The PC is running Windows 7 64 Ultimate with all the latest important and recommanded Windows Updates and latest Promise Windows driver R_WinDrv_Installer_V18.104.22.168_WHQL
Both units are running latest Promise Firmware (R_SI_5.04.000061)
I have performed partition and filesystem check on both system which went successful and showed no errors.
Could you please help me, they are my work drives and I totally feel helpless and desperate.