# Small Form Factor (SFF)

- [Setting up the Bios](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/setting-up-the-bios.md)
- [Upgrading Memory](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/upgrading-memory.md)
- [Upgrading Hard Drive](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/upgrading-hard-drive.md)
- [Replacing Power Supply](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/replacing-power-supply.md)
- [Replacing DVD](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/replacing-dvd.md)
- [Jumper " Error" message](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/jumper-error-message.md)
- [Boot Not Found " Error" message](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/boot-not-found-error-message.md)
- [No Sound](/troubleshooting/dell-computers/optippex-390-790-990/small-form-factor-sff/no-sound.md)