Hi, I am a novice here, so do excuse any technical inaccuracies in reporting this problem. First, let me specify my system configuration and then the problem. My system configuration is as below: AMD Athlon II X3 440 Processor 3.00 GHz on MSI 880GMA-E45 motherboard with 4 GB (2X2 GB) Kingston DDR3 RAM. My OS is Windows 7 Ultimate Ed. 32bit. Now, I have three HDDs installed inside the CPU, the CMOS setup details of which are as below: IDE Primary Master: Seagate (ST 380011A) 80 GB capacity IDE Primary Slave: Samsung (SV 2042H) 20.4 GB capacity SATA 1: Hewlett Packard DVD Writer 1260d ATAPI SATA 2: Western Digital WDC (WDS000AADS - 00S9B0) 500 GB capacity The WDC (Western Digital SATA 2) drive is my main HDD, the most recent one bought and installed on September 2010. The OS Windows 7 is installed on the C: partition of this drive and my system boots from this drive. I've created three partitions on this drive as follows: C - 50 GB (approx) D - 225 GB (approx) E - 225 GB (approx) The IDE drives are old HDDs that I was using around 2003 in an old system and are filled with important data [movies,mp3s, ebooks, official docs,etc]. They contain no OS/system files. The Samsung IDE drive has 3 partitions while the Seagate IDE drive has no partitions. So effectively, my HDD structure on Windows Explorer in my computer looks as below: C: [WDC SATA partition 1] D: [WDC SATA partition 2] E: [WDC SATA partition 3] F: [DVD Writer] G: [Seagate IDE partition 1] H: [Seagate IDE partition 2] I: [Seagate IDE partition 3] J: [Samsung IDE] Now here's the problem: As long as I keep working on the data [whether it is watching movies, listening to music or accessing anything] stored on the new WDC SATA drive [C,D, and E partitions], the system works great. But the moment I try to access any data from the older IDE drives, the system slows down drastically followed by a whirring noise [obviously from the old drives]. After about 5-10 minutes, the system is back to normal so long as I am working on the C,D, or E partitions of the SATA WDC drive. Is there any way I can prevent this slowdown without having to remove the older IDE drives from inside the CPU. I cannot afford to delete any of the data from the older IDE drives. And if removing them is the only option, is it possible to access the data in the older IDE drives externally by simply connecting them through the USB port. How can I go about doing that? Thanks in advance for any advice in this regard.