Did you disconnect the HD cables in the cleaning process? This series of system uses an internal thermal sensor within the HD. Here is the sensor cable connection: [https://d3nevzfk7ii3be.cloudfront.net/igi/uo5O5NJPCoqZxEh1|Black/Gray wire]. Depending on who's drive you have the configuration of the wires may not look like this one, make sure its connected. If it is, you may have either a drive which is starting to fail or the internal sensor has failed.
-
Now the rub... In either case you'll need to replace the drive. I would recommend you go with a hybrid drive vs a traditional drive. Or, if you can swing the cost a SSD will also work will here.
+
Now the rub... In either case you'll need to replace the drive. I would recommend you go with a hybrid drive vs a traditional drive. Or, if you can swing the cost a SSD will also work here.
As for the best bang for the buck I would go with this drive: [http://www.seagate.com/consumer/upgrade/desktop-solid-state-hybrid-drive/|Seagate Desktop 3.5" SSHD]. This drive offers auto SATA port sense technology so it will match up with your systems SATA port which is SATA II (3.0 Gb/s). You will still need a replacement thermal sensor for your systems heat management system. As Mayer pointed out you'll need: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade].
If you want to go with a SSD drive it will need to run at SATA II (3.0 Gb/s). Some drives are fixed at SATA III (6.0 Gb/s) so you do need to review the data sheet to make sure it supports SATA II. I would recommend Samsung 750 EVO or 850 EVO drive, both offer SATA II support. Here with the SSD you'll need both the: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade] and you'll need an adapter frame to support the 2.5" SSD in the 3.5" frame the old drive was held in with: [https://eshop.macsales.com/item/OWC/SSD2535BKT/|OWC 2.5" to 3.5" Drive Adapter Bracket].
For either here is the IFIXIT guide you'll need to follow: [guide|6284|iMac Intel 21.5" EMC 2389 Hard Drive Replacement].
Did you disconnect the HD cables in the cleaning process? This series of system uses an internal thermal sensor within the HD. Here is the sensor cable connection: [https://d3nevzfk7ii3be.cloudfront.net/igi/uo5O5NJPCoqZxEh1|Black/Gray wire]. Depending on who's drive you have the configuration of the wires may not look like this one, mare sure its connected. If it is, you may have either a drive which is starting to fail or the internal sensor has failed.
+
Did you disconnect the HD cables in the cleaning process? This series of system uses an internal thermal sensor within the HD. Here is the sensor cable connection: [https://d3nevzfk7ii3be.cloudfront.net/igi/uo5O5NJPCoqZxEh1|Black/Gray wire]. Depending on who's drive you have the configuration of the wires may not look like this one, make sure its connected. If it is, you may have either a drive which is starting to fail or the internal sensor has failed.
Now the rub... In either case you'll need to replace the drive. I would recommend you go with a hybrid drive vs a traditional drive. Or, if you can swing the cost a SSD will also work will here.
As for the best bang for the buck I would go with this drive: [http://www.seagate.com/consumer/upgrade/desktop-solid-state-hybrid-drive/|Seagate Desktop 3.5" SSHD]. This drive offers auto SATA port sense technology so it will match up with your systems SATA port which is SATA II (3.0 Gb/s). You will still need a replacement thermal sensor for your systems heat management system. As Mayer pointed out you'll need: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade].
If you want to go with a SSD drive it will need to run at SATA II (3.0 Gb/s). Some drives are fixed at SATA III (6.0 Gb/s) so you do need to review the data sheet to make sure it supports SATA II. I would recommend Samsung 750 EVO or 850 EVO drive, both offer SATA II support. Here with the SSD you'll need both the: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade] and you'll need an adapter frame to support the 2.5" SSD in the 3.5" frame the old drive was held in with: [https://eshop.macsales.com/item/OWC/SSD2535BKT/|OWC 2.5" to 3.5" Drive Adapter Bracket].
For either here is the IFIXIT guide you'll need to follow: [guide|6284|iMac Intel 21.5" EMC 2389 Hard Drive Replacement].
Did you disconnect the HD cables in the cleaning process? This series of system uses an internal thermal sensor within the HD. Here is the sensor cable connection: [https://d3nevzfk7ii3be.cloudfront.net/igi/uo5O5NJPCoqZxEh1|Black/Gray wire]. Depending on who's drive you have the configuration of the wires may not look like this one. Make sure its connected it. If it is you may have either a drive which is starting to fail or the internal sensor has failed.
+
Did you disconnect the HD cables in the cleaning process? This series of system uses an internal thermal sensor within the HD. Here is the sensor cable connection: [https://d3nevzfk7ii3be.cloudfront.net/igi/uo5O5NJPCoqZxEh1|Black/Gray wire]. Depending on who's drive you have the configuration of the wires may not look like this one, mare sure its connected. If it is, you may have either a drive which is starting to fail or the internal sensor has failed.
Now the rub... In either case you'll need to replace the drive. I would recommend you go with a hybrid drive vs a traditional drive. Or, if you can swing the cost a SSD will also work will here.
As for the best bang for the buck I would go with this drive: [http://www.seagate.com/consumer/upgrade/desktop-solid-state-hybrid-drive/|Seagate Desktop 3.5" SSHD]. This drive offers auto SATA port sense technology so it will match up with your systems SATA port which is SATA II (3.0 Gb/s). You will still need a replacement thermal sensor for your systems heat management system. As Mayer pointed out you'll need: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade].
If you want to go with a SSD drive it will need to run at SATA II (3.0 Gb/s). Some drives are fixed at SATA III (6.0 Gb/s) so you do need to review the data sheet to make sure it supports SATA II. I would recommend Samsung 750 EVO or 850 EVO drive, both offer SATA II support. Here with the SSD you'll need both the: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade] and you'll need an adapter frame to support the 2.5" SSD in the 3.5" frame the old drive was held in with: [https://eshop.macsales.com/item/OWC/SSD2535BKT/|OWC 2.5" to 3.5" Drive Adapter Bracket].
For either here is the IFIXIT guide you'll need to follow: [guide|6284|iMac Intel 21.5" EMC 2389 Hard Drive Replacement].
Did you disconnect the HD cables in the cleaning process? This series of system uses an internal thermal sensor within the HD. Here is the sensor cable connection: [https://d3nevzfk7ii3be.cloudfront.net/igi/uo5O5NJPCoqZxEh1|Black/Gray wire]. Depending on who's drive you have the configuration of the wires may not look like this one. Make sure its connected it. If it is you may have either a drive which is starting to fail or the internal sensor has failed.
Now the rub... In either case you'll need to replace the drive. I would recommend you go with a hybrid drive vs a traditional drive. Or, if you can swing the cost a SSD will also work will here.
As for the best bang for the buck I would go with this drive: [http://www.seagate.com/consumer/upgrade/desktop-solid-state-hybrid-drive/|Seagate Desktop 3.5" SSHD]. This drive offers auto SATA port sense technology so it will match up with your systems SATA port which is SATA II (3.0 Gb/s). You will still need a replacement thermal sensor for your systems heat management system. As Mayer pointed out you'll need: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade].
If you want to go with a SSD drive it will need to run at SATA II (3.0 Gb/s). Some drives are fixed at SATA III (6.0 Gb/s) so you do need to review the data sheet to make sure it supports SATA II. I would recommend Samsung 750 EVO or 850 EVO drive, both offer SATA II support. Here with the SSD you'll need both the: [https://eshop.macsales.com/item/OWC/DIDIMACHDD09/|OWC In-line Digital Thermal Sensor for iMac 2009-2010 Hard Drive Upgrade] and you'll need an adapter frame to support the 2.5" SSD in the 3.5" frame the old drive was held in with: [https://eshop.macsales.com/item/OWC/SSD2535BKT/|OWC 2.5" to 3.5" Drive Adapter Bracket].
For either here is the IFIXIT guide you'll need to follow: [guide|6284|iMac Intel 21.5" EMC 2389 Hard Drive Replacement].